<!DOCTYPE html>
<html>
<head>
	<title>css-background</title>
	<meta charset="utf-8">
	<link rel="stylesheet" type="text/css" href="css/1-background.css">
</head>
<body>
	<h1>我的css web页</h1>
	<p>你好世界！这是来自 W3CSchool菜鸟教程的实例。</p>

	<div>
		改文本插入在 div 元素中。
		<p>该段落有自己的背景颜色。</p>
		我们仍然在同一个 div 中。
	</div>

	<div class="div_center">
		<h1>Helloworld!</h1>
		<p>This example contains some advanced CSS methods you may not have learned yet. But, we will explain these methods in a later chapter in the tutorial.</p>
	</div>
</body>
</html>